Phenylpropanolamine & risk of hemorrhagic stroke: Final Report of The Hemorrhagic Stroke Project



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2.61 (p=.132)

3.82


1.05

.043

MEN






Cases

Controls

Unadjusted

Adjusted Estimates1




(n=319)

(n=626)

Matched

OR


Matched

OR

LCL2



p-value




No.

%

No.

%

No use3

309

96.9%

597

95.4%

--

--


--

--

Current use4

5

1.6%

5

0.8%

2.03 (p=.237)

1.26


0.34

.385

First use5

1

0.3%

1

0.2%

2.00 (p=.556)

2.95

0.24

.241

Not-first use

4

1.2%

4

0.6%

2.06 (p=.285)

0.95

--

.479




























Prior use6

1

0.3%

8

1.3%

0.25 (p=.140)

0.25


--

.098



1Matched odds ratio adjusted for smoking, hypertension, race and education.

2Lower limit of one-sided 95% confidence interval.

3No PPA use in 2-week period before focal time.

4Use of any PPA-containing product on index date (ID) before focal time or preceding calendar day.

5Current use and no other uses in 2-week period before ID.

6Use of any PPA-containing product 2 or 3 calendar days prior to ID.

Appendix E
Analyses Stratified by Sentinel Symptoms: Phenylpropanolamine (PPA) Exposure

and Risk of Hemorrhagic Stroke

NO SENTINEL SYMPTOMS





Cases

Controls

Unadjusted

Adjusted Estimates1




(n=548)

(n=1075)

Matched

OR


Matched

OR

LCL2



p-value




No.

%

No.

%

No use3

519

94.7%

1022

95.1%

--

--

--

--

Any PPA4

20

3.6%

26

2.4%

1.55 (p=.104)

1.33

0.77

.194

Cough/cold remedy

17

3.1%

25

2.3%

1.35 (p=.221)

1.12

0.64

.371

Appetite suppressant

4

0.7%

1

0.1%

7.96 (p=.046)

12.10

1.39

.029


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